The service tunnel which Froome cycled through is one of the highest security sites in the UK and France.

It was organised last month by Jaguar, which provides Team Sky, who Froome cycles for, with a fleet of XF Sportbrakes. Jaguar will be releasing a film, "Team Sky - Cycling Under The Sea", to celebrate the event.

John Keefe, head of public affairs at Eurotunnel, added: "The Eurotunnel is an incredible, unique piece of engineering on par with the Golden Gate Bridge or Sydney Opera House.

"The problem of course, is that no one gets to see it, so we were delighted when Jaguar Land Rover came to us with this ground-breaking request"